CVE-2024-3191 in MailCleaner
Summary
by MITRE • 04/29/2024
A vulnerability, which was classified as critical, has been found in MailCleaner up to 2023.03.14. This issue affects some unknown processing of the component Email Handler. The manipulation leads to os command injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-262307.
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Analysis
by VulDB Data Team • 03/21/2025
The vulnerability identified as CVE-2024-3191 represents a critical security flaw within MailCleaner software version 2023.03.14 and earlier, specifically within the Email Handler component. This vulnerability exposes the system to operating system command injection attacks, which constitute a severe threat to network security infrastructure. The flaw exists in the processing mechanisms of email handling functionality, where insufficient input validation allows malicious actors to execute arbitrary commands on the underlying operating system. The vulnerability's critical classification stems from its remote exploitability and the potential for complete system compromise when exploited.
The technical implementation of this vulnerability demonstrates a classic command injection flaw that aligns with CWE-77 standards, specifically categorized under improper neutralization of special elements used in OS commands. Attackers can manipulate the Email Handler component by injecting malicious commands through email processing inputs, bypassing normal security controls and gaining unauthorized access to system resources. The remote exploitation capability means that threat actors can initiate attacks without requiring physical access to the system, making this vulnerability particularly dangerous for email security appliances deployed in production environments.
The operational impact of CVE-2024-3191 extends beyond simple command execution, potentially allowing attackers to escalate privileges, access sensitive data, modify system configurations, or establish persistent backdoors within the network. This vulnerability directly violates fundamental security principles outlined in the MITRE ATT&CK framework under the T1059.001 technique for Command and Scripting Interpreter, where adversaries leverage legitimate system tools to execute malicious commands. Organizations running affected MailCleaner versions face significant risks including data breaches, system compromise, and potential lateral movement within their network infrastructure.
Security remediation for this vulnerability requires immediate implementation of the vendor-provided patch, which addresses the input validation deficiencies in the Email Handler component. System administrators should also implement network segmentation and monitoring controls to detect anomalous command execution patterns. Additional mitigations include restricting remote access to the MailCleaner appliance, implementing web application firewalls, and conducting comprehensive security assessments of email handling processes. The public disclosure of the exploit code further emphasizes the urgency of remediation, as it provides threat actors with readily available tools to target vulnerable systems. Organizations should also review their incident response procedures and consider conducting vulnerability scans to identify any potential compromise indicators within their network infrastructure.